A collection of my electronics hobby projects not only around the PDP-11

This post gives a short overview about the RLV12 Emulator. There are two versions, one for my PDP-11/Hack and one for normal Q-Bus systems. It plugs into the backplane of a PDP-11 system and emulates a RLV12 controller with 4 RL01/02 units attached.

This is a short resume about my Plessey Peripherals PDP-11. Or let’s say about the remains of the system which for a long time was just a play ground and today I could revive it as a fully functional PDP-11. Even only the core is of the original system, adding new components for the surround still let’s you experience the real look and feel of a small PDP-11. Update 2020 New Power Entry Module

This is a study how to read and write Floppies without a floppy disk controller. I developed two solutions. One is a pure software solution running on a AVR processor and the other is a MFM de/encoder using a small CPLD

I often have the need for prototyping certain features or ideas using either a CPLD or an MCU. I mostly use a breadboard for this purpose. Howeveer when it comes to use a CPLD you need some sort of adapters. After using several off the shelf universal adapters I decided to build my own adapters